Pump.



' Patented lune 5, |900.

P U Ni P.

(Applicat'mn Sled Feb. 23, 1897.)

(No'Model.)

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TN: Nonms PETERS co. Puo'rauwo., wummz'ron. l;A c.

UNITED STATES PATENr Prien...

JOSEPH ONEIL, OF TAYLORSTOWN, PENNSYLVANIA, ASSIGNOR OF TWO- TI-IIRDS TOFRANK L. MASSON, OF SAME PLACE, AND CHARLES O.

OHAMBERLIN, OF WASHINGTON, PENNSYLVANIA.

PUMP.

SPECIFIGATION forming part of Letters Patent No. 651,314, dated June 5,1900. Application filed February 23, 1897. Serial No. 624,558. (Nomodel.)

T0 @ZZ whom it may concern,.-

Be it known that I, JOSEPH ONEIL, a citizen of the United States,residing at Taylorstown, in the county of Washington and State ofPennsylvania, have invented or discovered new and useful Improvements inPumps, of which the following is a specification.

In the accompanying drawings,which make part of this specification,Figure 1 is a vertical elevation of my improved pump and the inclosedcage and cups beneath the same. Fig. 2 is a vertical section of Fig. 1.Fig. 3 is a plan of a sleeve secured on the upper end of the stationarystand-pipe. Fig. 4 is a side elevation of the upper end of thestand-pipe and sleeve. Fig. 5 is a vertical section through thepump-seat and the adjacent tubing, showing the cups on the valve-body,the inclosed cage, and the stuffing-box broken off of the pump-valve.

The purposes of my invention, generally stated, are to devise aninexpensive form of pump which shall do away with the ordinary workingbarrel and also with a plunger provided with cups. A. further purpose isto make the pump self-lifting to a given degree, thereby greatlyreducing the strain ou .the sucker-rods and enabling me to use alighterform of-such rods.

It is well known to those skilled in the art`- that the working barrelsof the ordinary pump are by far the most expensive portion thereof. Theyrequire to be machined with the greatest accuracy and must be carefullypolished internally to accurately iit the plunger. It is furtherfamiliar to those acquainted with the art that the cups on the plunger-sare a source of constant annoyance and delay and expense, particularlyin wells containing Floating sand, since such cups will be cut andrequire frequent renewal.

In the present invention I have no working barrels nor any reciprocatingplunger nor any cups to form a packing between said working barrel andplunger,l as will be more clearly brought out below.

In the accompanying drawings,which make part of this specification, 2 isthe ordinary standing valve-body, provided with the cups body is screwedany well-known form of cage 3, provided with ball-valve 4, seated uponthe valve-seat 5, the throw of said ball-Valve being limited by theinwardly-projecting lugs- 3, The parts thus farmentioned are old in theart.

I now come to those parts which I claim to be distinctively new` inthemselves and new in combination with the parts just described.

6 is a hollow stand-pipe secured to the upper end of cage 3 and like itremaining stationary in the well, except when withdrawn for repairs, &c.The bore of this hollow stand-pipe connects with the bore of the cageand valve-body. The hollow stand-pipe 6 is provided at its upper endwith a sleeve 7, having longitudinal passages 7, The sleeve 7 does notact as a plunger, for it remains stationary and only loosely iits in theshell to be described.

8 is a reciprocating shell which moves upon the stationary stand-pipe 6as a guide, and a close joint between the two is secured` by means ofthe stufling-box 9, gland 10, follower 11, and packing 12. To theupperend of said reciprocating shell is secured the ordinary subpiece13, on which rests the valve-seat 14, supporting ball-valve 15 in opencage 1G, screwed to subpiece 13.

To the upper end of cage 16 are secured in the usual manner thesucker-rods.

As shown in Fig. 5, 17 is the pump-seat, A

which incloses the valve-body and closed cage, said pump-seat 17 beinginterposed between and screwed to two sections of tubing 18 and 18. Thisis a construction which I prefer for the pump-seat when the pump is putinto a well with the tubing; but-in cases where the tubing is already inand it is not desirable to remove the tubing from the well to insert thepump-seat my pump can be set on top of the working barrel already .inthe well, and thus obviate the necessity of drawing the tubing.

The operation of the pump is as follows: When the sucker-rods arelifted, the shell S will rise, being guided in its movement by a rubbingcontact between its stuiing-box and the vertical stand-pipe 6. Thedisplacement of the oil occasioned by the upward movement of the shell 8will cause an inrush of the oil through the passage b, raising theballvalve 4, and through the Vertical stand-pipe 6 into the interior ofthe shell 8. In the meantime the oil which has previously been caughtbetween the under side of the sleeve 7 and the upper side of the gland 9will escape as these parts approach each other through the channel 7 7ainto the upper part of the shell 8. On the downward movement of thesuckerrod the shell 8 would be depressed, the ball 4 will seat itself,and the oil in the shell 8 will pass up through the subpiece 13 andraise the ball 15 and so pass up the well. Itwill be further observedthat owing to the difference in area between the sleeve on the upper endof the stand-'pipe 6 and the stuffing-box at the bottom of shell 8, thewell-pressure in an upward direction .against the Linder side of saidstuffing-box will be exerted on a greater cross-section than thewell-pressure in a downward direction upon the upper side of the sleeve.Hence the well-pressure upwardly will overbalauce to a certain extentthe wellpressure exerted downwardly and will tend to this extent to helpraise the suckerrods. This is directly contrary to the ordinaryoperation of the usual pump, since in lifting the ordinary pump not onlylifts the weight of the sucker-rods, but must also lift the weight ofthe fiuid in the well above.

It should be further noted that the only packing used between the movingand the stationary parts of the pump is an ordinary packing 6a', whichis `well-nigh inaccessible to the sand and which cannot be so easily cutas the oldstyle cups. This packing lits around the stand-pipe 6 andobviates the necessity of a carefnllybored and polished working barrel.The construction` is therefore cheap, simple, and not requiring suchfrequent renewals. The shell 8 is only an ordinary tube, requiring nospecial machining or fitting.

The function of the sleeve 7, as heretofore l stated, is not to act as apiston or plunger, but

it merely acts as a collar to lock against the upper end of the gland 9when it is desired to draw the entire apparatus from the well.

Various changes may be made in the details of construction and fittingtogether of the parts while still retaining the broad features of myinvention, and I do not wish to limit myself by implication to anyspecial restricted features of construction unless such features areexpressly enumerated in the claims.V

Having described my invention, I claim- 1. In pumps, the combination ofa standpipe iixed in the well; tubing for said well; a tube within thetubing adapted to recipro-v cate upon said pipe; sucker-rods from whichsaid tube is suspended and a stuflingbox carried by the reciprocatingtube and interposed between said tube and said stand-pipe.

2. In pumps, the combination of a standpipe fixed in the Well; a collarhaving duidpassages on the upper end of said stand-pipe; tubing for saidwell; a tube within the `tubing adapted to reciprocate upon saidstandpipe; sucker-rods from which said tube is suspended and astuffing-boxinterposed between said stand-pipe and the lower end of saidreciprocating tube.-

3. In pumps, the combination of a stand= pipe fixed in the well; tubingfor said Well; a tube within the tubing adapted to reciprocate upon saidstand-pipe the annulus of said tube having a greater cross-sectionalarea than the cross-sectional area of the stand-pipe; sucker-rods fromwhich said tube is suspended and a stufing-box interposed between saidstand-pipe and the lower end of said reciprocating tube.

4. In pumps, the combination of tubing; a pump-seat interposed betweenand secured to two sections of the tubing; a valve-cage sup ported uponsaid pump-seat; a stand-pipe secured to said valve-cage; a tubesuspended within the tubing from the sucker-rods and adapted toreciprocate upon said stand-pipe; said sucker-rods; and a stuffing-boxwith or dinary packing interposed between said standpipe and the lowerend of said reciprocating tube.

In testimony whereof I have hereunto set my hand this 16th day ofFebruary, A. D.

JOSEPH ONEIL, IVitnesses:

WM. L. PIERCE, L. D. IAMs.

